MIDWOOFER 18W/4424G00
The Discovery series offer traditional design, superior sound, a solid construction, and a wide range of variants. Combining these elements - plus a wealth of technical features and finesses - it gives our customers the possibility of acquiring a tailor-made Scan-Speak solution with very good performance at a reasonable low price point!
KEY FEATURES:
High Output 91dB @ 2,83V
Coated NRSC Fibre Glass Cone
Die cast Alu Chassis vented below spider
T-S Parameters
Resonance frequency [fs] |
49 Hz |
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Mechanical Q factor [Qms] |
4.57 |
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Electrical Q factor [Qes] |
0.42 |
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Total Q factor [Qts] |
0.38 |
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Force factor [Bl] |
5.2 Tm |
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Mechanical resistance [Rms] |
0.77 kg/s |
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Moving mass [Mms] |
11.4 g |
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Suspension compliance [Cms] |
0.92 mm/N |
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Effective diaph. diameter [D] |
132 mm |
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Effective piston area [Sd] |
137 cm² |
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Equivalent volume [Vas] |
24.1 l |
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Sensitivity (2.83V/1m) |
90.9 dB |
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Ratio Bl/√Re |
2.91 N/√W |
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Ratio fs/Qts |
128 Hz |
Notes:
IEC specs. refer to IEC 60268-5 third edition. All Scan-Speak products are RoHS compliant. Data are subject to change without notice.
Datasheet updated: February 22, 2011.
Excellent Midrange Performance
Low Damping SBR Rubber Surround
Electrical Data
Nominal impedance [Zn] |
4 |
Ω |
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Minimum impedance [Zmin] |
4.1 |
Ω |
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Maximum impedance [Zo] |
38.0 |
Ω |
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DC resistance [Re] |
3.2 |
Ω |
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Voice coil inductance [Le] |
0.47 mH |
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Power Handling |
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100h RMS noise test (IEC 17.1) |
50 W |
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Long-term max power (IEC 17.3) |
110 W |
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Voice Coil and Magnet Data |
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Voice coil diameter |
25 mm |
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Voice coil height |
10.5 mm |
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Voice coil layers |
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2 |
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Height of gap |
5 mm |
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Linear excursion |
± 2.8 mm |
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Max mech. excursion |
± 8 mm |
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Unit weight |
1.1 kg |
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N.C. Madsensvej 1 6920 Videbæk Denmark Phone: +45 6040 5200 www.scan-speak.dk
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